APOA1 and peripheral arterial disease: PAD patients in the lowest tertile of CEC had significantly lower HDL-C- and apoA-I-levels as compared to PAD patients in the highest tertile of CEC (1.16 ± 0.36 mmol/L vs. 1.42 ± 0.41 mmol/L for HDL-C, p = 0.030, and 1.36 ± 0.24 g/L vs. 1.56 ± 0.28 g/L for apoA-I, p = 0.009, Table 1).